JP2003304088A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus having a conductive sheet capable of touching conductive members electrically and surely. <P>SOLUTION: In the electronic apparatus where a body 1 and a shield member 4 required to be conducted electrically are conducted through a conductive sheet 5 formed of a metallic material 5a and an adhesive tape 5b, the adhesive tape 5b is applied to an adhesive tape applying part 5c, i.e., a missing part, provided on one side of the metallic material 5a forming the conductive sheet 5. The metallic material 5a is touched, on the side thereof applied with the adhesive tape 5b, to the upper surface of the shield member 4 through adhesion of the adhesive tape 5b and touched, on the other side thereof, to the lower surface of the body 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device such as a card type portable terminal device.

[0002]

2. Description of the Related Art FIG. 5 is a schematic front sectional view of a conventional card type portable terminal device. As is apparent from this figure, in the conventional card type portable terminal device, a main body 11 made of a metal casing is used. The printed circuit board 12 is fitted to the open lower surface of the printed circuit board 12 via the spacer 13 so as to close the lower surface, and a metal plate material is mounted on the upper surface of the printed circuit board 12 on which a large number of circuit components (not shown) are mounted. The shield member 14 formed in a frame-like frame is fixed by soldering, and a conductive sheet 15 is interposed between the upper surface of the shield member 14 and the ceiling surface of the main body 11 to electrically connect the two. ing.

The conductive sheet 15 has a metal member 15a and an adhesive tape 1 as shown in the enlarged sectional view of FIG.
The adhesive tape 15b is attached to the upper surface of the shield member 14 and the metal member 15a is mechanically brought into contact with the ceiling surface of the main body 11 to form the main body 11, Shield member 1
4 and the printed circuit board 12 are electrically connected.

In this conventional structure, the shield member 14 is made of a metal material having a high shielding effect and a high conductivity, and the electric circuit of the printed circuit board 12 generates noise due to radiated radio waves from the outside. Alternatively, it prevents the malfunction.

[0005]

In the above configuration, the adhesive tape portion 1 in which the adhesive tape 15b of the conductive sheet 15 is interposed between the metal member 15a and the shield member 14.
Although the metal powder is contained in 5b, the main body 11
The decrease in conductivity between the shield member 14 and the shield member 14 is unavoidable, and the ground effect is reduced.

In consideration of such a decrease in conductivity, in the conventional one, for example, a rib (not shown) is provided on the metal member 15a, and the rib applies a slit-like pressing force to the adhesive tape 15b. There is a tape which is applied to reduce the thickness of the adhesive tape 15b to improve the conductivity.

However, even in this method, the metal member 15a and the shield member 1 are connected via the adhesive tape 15b.
There is a limit to the continuity between 4 and sufficient conductivity was not obtained.

The present invention is particularly intended to enhance the ground for the purpose of reducing noise by reducing the impedance of the ground of the electronic device and eliminating the potential difference in the ground portion. In particular, the housing shield member constituting the main body is provided. It is an object of the present invention to provide an electronic device in which a ground is reinforced between two conductive members that need to be electrically connected to each other.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an electronic device of the present invention is a metal member between two conductive members that need to be electrically conducted. And a conductive sheet formed of an adhesive tape for electrical continuity, wherein the adhesive tape is attached to an adhesive tape attachment portion composed of a defective portion provided on one surface of the metal member of the conductive sheet, and the adhesive tape Is an electronic device in which the surface of the metal member on which is attached is brought into contact with one of the conductive members by the adhesive force of the adhesive tape, and the other surface of the metal member is brought into contact with the other of the conductive material portions.

According to this structure, the conductive sheet has the metal member in contact with one of the conductive members on one surface, and the surface of the metal member and the surface of the adhesive tape both contact the other conductive member on the other surface. From what you will be doing
The conductive sheet can be surely brought into electrical contact with both conductive members.

In the electronic device of the present invention, a conductive sheet having a structure in which a metal member and an adhesive tape are superposed between two conductive members which need to be electrically connected is made of the above metal. The one end of the metal member is bent on one side of the member, the adhesive tape is attached to the remaining portion of the one surface of the metal member where the one end does not overlap, and the metal on which the adhesive tape is attached It is an electronic device in which one surface of a member is brought into contact with one of the conductive members by the adhesive force of the adhesive tape and the other surface of the metal member is brought into contact with the other of the conductive members.

According to this structure, the metal sheet contacts one side of the conductive member on one side of the conductive sheet, and the side of the metal member and the side of the adhesive tape both contact the other side of the conductive member on the other side. Therefore, the conductive sheet can be surely brought into electrical contact with each other by the conductive sheet.

Moreover, in this structure, one end of the metal member is bent, and the adhesive tape is attached to the remaining portion of the one surface of the metal member where the one end does not overlap to form the conductive sheet. Therefore, the conductive sheet can be formed extremely easily.

The electronic device of the present invention is an electronic device in which a conductive sheet having a structure in which a metal member and an adhesive tape are superposed between the two conductive members which are required to be electrically conductive, is electrically connected. The both ends of the metal member are bent to one surface side of the metal member, and the adhesive tape is attached to the remaining portion of the one surface of the metal member where the folded both ends do not overlap, and the adhesive tape is attached. The electronic device is configured such that one surface of the metal member is brought into contact with one of the conductive members by the adhesive force of the adhesive tape and the other surface of the metal member is brought into contact with the other of the conductive members.

According to this structure, the metal sheet contacts one side of the conductive member on one side of the conductive sheet and the side of the metal member and the side of the adhesive tape on the other side both contact the other conductive member. Therefore, the conductive sheet can be surely brought into electrical contact with each other by the conductive sheet.

Moreover, in this structure, both ends of the metal member are bent, and the adhesive tape is attached to the remaining portion of the central portion of the one surface of the metal member where the bent both ends do not overlap each other. Therefore, the conductive sheet can be formed extremely easily.

The electronic device of the present invention is an electronic device in which one of the conductive members is a housing that constitutes the main body of the electronic device.

According to this structure, one of the conductive members is a housing that constitutes the main body of the electronic device, and the main body of the electronic device and the conductive member in the main body can be reliably brought into electrical contact with the conductive sheet. it can.

The electronic device of the present invention is an electronic device in which one of the conductive members is a casing constituting the main body of the electronic device and the other is a shield member for a printed circuit board provided in the casing.

According to this structure, the main body of the electronic device and the shield member of the printed board provided in the main body can be reliably brought into electrical contact with each other by the conductive sheet.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic front sectional view of a card type portable terminal device shown as an embodiment of an electronic apparatus of the present invention. In this figure, reference numeral 1 is a main body made of a metal housing with an open lower surface, and the printed board 2 is fitted to the open lower surface of the main body 1 via a spacer 3 so as to close the lower surface. I'm wearing it.

The printed circuit board 2 has a large number of circuit parts (not shown) mounted on the circuit surface facing the inside of the main body 1, and an electric circuit composed of these circuit parts or the like radiates radio waves from the outside. In order to prevent noise or malfunction due to the above, the upper surface having this electric circuit is covered with a shield member 4 in which a metal plate material is formed in an inverted dish-shaped frame. The lower edge of the shield member 4 is fixed to the printed circuit board 2 by soldering.

There is a space between the upper surface of the shield member 4 and the ceiling surface of the main body 1 so that they are separated from each other. The sheet 5 provides electrical continuity.

This conductive sheet 5 is, as shown in FIG.
It is composed of a metal member 5a having a shape in which the left half of the lower surface is cut off, and an adhesive tape 5b attached to an adhesive tape attachment portion 5c consisting of a missing portion of the metal member 5a, and the upper surface of the metal member 5a is placed on the ceiling of the main body 1. The metal member 5a and the lower surfaces of the adhesive tape 5b are brought into contact with the upper surface of the shield member 4 while being in contact with the surface.

That is, on the lower surface of the conductive sheet 5, the lower surface of the metal member 5a and the lower surface of the adhesive tape 5b both come into contact with the upper surface of the shield member 4, so that the main body 1 and the shield member 4 are securely electrically connected. Are in contact with each other.

2A and 2B show the conductive sheet 5.
As is clear from these figures, first, the adhesive tape 5b is attached to the lower surface of the metal sheet material to be the metal member 5a so that the end surface is aligned at the left end in the figure.

Then, the middle part of the right half of the metal sheet material is bent downward at a right angle as shown in FIG. 2 (a), and one end portion of the metal sheet bent downward is connected to the one end portion. The sheet is further bent in the direction of arrow A so that one side surface contacts the lower surface of the metal sheet body portion.

As a result, as shown in FIG. 2 (b), the remaining portion where the bent one end portion does not overlap is formed on one surface (lower surface) of the metal member 5a formed of the metal sheet material. The adhesive tape mounting portion 5c serves as a defective portion, and the conductive sheet 5 is formed by mounting the adhesive tape 5b on the adhesive tape mounting portion 5c.

The conductive sheet 5 thus formed
As shown in FIG. 1, the ceiling surface of the main body 1 and the shield member 4 are
And the shield member 4 can be electrically connected to each other.

At this time, the heights of the metal member 5a and the adhesive tape 5b at the time of attachment are made substantially the same, that is, the lower surfaces of the metal member 5a and the adhesive tape 5b are made to be the same surface, whereby the conductive sheet is formed. 5 is the ceiling surface of the main body 1 and the shield member 4
The area in contact with is increased, and a larger ground effect can be expected.

Therefore, by using the conductive sheet 5 of the present invention in a card type portable terminal device, the coupling of the ground between the personal computer main body, the main body 1 and the shield member 4 is enhanced, and a larger noise removing effect can be obtained.

FIG. 3 is a schematic front sectional view of a card type portable terminal device having a conductive sheet of a different shape from the conductive sheet 5 shown in the embodiment of FIG. As is clear from this figure, in the conductive sheet 5 of this embodiment, the metal member 5a having a shape in which the central portion of the lower surface is missing 5c, and the metal member 5 are
The adhesive tape 5b is attached to the adhesive tape attachment portion 5c, which is the defective portion of a, and the upper surface of the metal member 5a is brought into contact with the ceiling surface of the main body 1 and the metal member 5a
The lower surface of the adhesive tape 5b is in contact with the upper surface of the shield member 4.

FIGS. 4A and 4B show the procedure for forming the conductive sheet 5 of the second embodiment,
As is clear from these figures, first, the adhesive tape 5b is attached to the center of the lower surface of the metal sheet material that becomes the metal member 5a.

Then, the left and right ends of the metal sheet material are bent downward at right angles as shown in FIG. 4 (a), and the bent ends are formed such that one side of each end is metal. The sheet is further bent in the directions of arrows A1 and A2 so as to contact the lower surface of the sheet.

As a result, as shown in FIG. 4B, the remaining portion where the bent both ends do not overlap each other on one surface (lower surface) of the metal member 5a formed of the metal sheet material is missing. The adhesive tape mounting portion 5c serves as a part, and the conductive tape 5 is formed by mounting the adhesive tape 5b on the adhesive tape mounting portion 5c.

The conductive sheet 5 thus formed
As shown in FIG. 3, the ceiling surface of the main body 1 and the shield member 4 are
And the shield member 4 can be electrically connected to each other.

Also in this embodiment, by making the heights of the metal member 5a and the adhesive tape 5b when they are attached to each other substantially equal, that is, by making the lower surfaces of the metal member 5a and the adhesive tape 5b the same surface. The area where the conductive sheet 5 contacts the ceiling surface of the main body 1 and the shield member 4 is increased, and a larger ground effect can be expected. Therefore, by using the conductive sheet 5 of the present invention in a card type portable terminal device, the coupling of the ground between the personal computer main body, the main body 1 and the shield member 4 is enhanced, and a larger noise removing effect is obtained.

[0038]

The present invention is constructed as described above, and the electronic equipment of the present invention is a conductive member formed by a metal member and an adhesive tape between two conductive members which need to be electrically conducted. In an electronic device configured to be electrically conducted by a sheet, the adhesive tape is attached to an adhesive tape attachment portion formed of a defective portion provided on one surface of the metal member of the conductive sheet, and the metal member having the adhesive tape attached The surface is brought into contact with one of the conductive members by the adhesive force of the adhesive tape, and the other surface of the metal member is brought into contact with the other of the conductive members.

According to the present invention, in the conductive sheet, the metal member is in contact with one of the conductive members on one surface thereof, and the surface of the metal member and the surface of the adhesive tape are both in contact with the other conductive member on the other surface thereof. From what you will be doing
The conductive sheet can be surely brought into electrical contact with both conductive members.

The electronic device of the present invention is an electronic device in which a conductive sheet having a structure in which a metal member and an adhesive tape are superposed between the two conductive members which are required to be electrically connected is the above-mentioned electronic device. The one end of the metal member is bent on one side of the metal member, the adhesive tape is attached to the remaining portion of the one surface of the metal member where the one end does not overlap, and the adhesive tape is attached. One of the surfaces of the metal member is brought into contact with one of the conductive members by the adhesive force of the adhesive tape, and the other surface of the metal member is brought into contact with the other of the conductive members.

According to this invention, the metal member contacts one of the conductive members on one surface of the conductive sheet, and the metal member surface and the adhesive tape surface both contact the other conductive member on the other surface. Therefore, both conductive members can be surely brought into electrical contact with each other with the conductive sheet.

Moreover, in the present invention, the conductive sheet is formed by bending one end of the metal member and mounting the adhesive tape on the remaining portion of the one surface of the metal member where the one end does not overlap. Therefore, the conductive sheet can be formed extremely easily.

The electronic device of the present invention is an electronic device in which a conductive sheet having a structure in which a metal member and an adhesive tape are superposed between two conductive members which are required to be electrically connected to each other. Both ends of the metal member are bent on one side of the metal member, and the adhesive tape is attached to the remaining portion of the one surface of the metal member where the folded both ends do not overlap each other, and the adhesive tape is attached. One of the surfaces of the metal member is brought into contact with one of the conductive members by the adhesive force of the adhesive tape, and the other surface of the metal member is brought into contact with the other of the conductive members.

According to the present invention, in the conductive sheet, the metal member comes into contact with one of the conductive members on one surface and the surface of the metal member and the surface of the adhesive tape come into contact with the other conductive member on the other surface. Therefore, the conductive sheet can be surely brought into electrical contact with each other by the conductive sheet.

Further, according to the present invention, both ends of the metal member are bent, and the adhesive tape is attached to the remaining portion of the central portion of one surface of the metal member where the bent both ends do not overlap each other. Therefore, the conductive sheet can be formed extremely easily.

In the electronic device of the present invention, one of the conductive members is a casing that constitutes the main body of the electronic device.

According to the present invention, one of the conductive members is a casing that constitutes the main body of the electronic device, and the main body of the electronic device and the conductive member in the main body can be surely brought into electrical contact with the conductive sheet. it can.

Further, in the electronic device of the present invention, one of the conductive members is a casing constituting the main body of the electronic device, and the other is a shield member for a printed circuit board provided in the casing.

According to the present invention, the main body of the electronic device and the shield member of the printed board provided in the main body can be reliably brought into electrical contact with each other by the conductive sheet.

[Brief description of drawings]

FIG. 1 is a schematic front cross-sectional view of a card type portable terminal device shown as an embodiment of an electronic device of the present invention.

FIG. 2 is a diagram showing a process of forming a conductive sheet applied to the electronic device of the present invention.

FIG. 3 is a schematic front cross-sectional view of a card-type portable terminal equipped with a conductive sheet according to another embodiment of the present invention.

FIG. 4 is a diagram showing a process of forming a conductive sheet according to another embodiment.

FIG. 5 is a schematic front sectional view of a conventional electronic device.

FIG. 6 is a view showing a conductive sheet applied to a conventional electronic device of the above.

[Explanation of symbols]

1 body 2 printed circuit boards 3 spacers 4 Shield member 5 Conductive sheet 5a Metal member 5b adhesive tape

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4E353 AA16 AA17 AA18 BB02 BB04                       BB05 CC13 CC22 CC33 DD08                       DD11 GG04                 5E077 BB01 BB31 BB40 CC02 DD14                       JJ16                 5E321 AA01 AA02 AA14 BB44 CC06                       CC16 GG01 GG05

Claims (5)

[Claims] 1. An electronic device in which two conductive members which are required to be electrically conductive are electrically connected by a conductive sheet formed of a metal member and an adhesive tape, and one surface of the metal member of the conductive sheet. The adhesive tape is attached to the adhesive tape attaching portion formed of the defective portion, and the surface of the metal member on which the adhesive tape is attached is brought into contact with one of the conductive members by the adhesive force of the adhesive tape and the metal member. The other side of the conductive member is brought into contact with the other side of the conductive member. 2. An electronic device in which a conductive sheet having a structure in which a metal member and an adhesive tape are superposed between the two conductive members which are required to be electrically conductive,
The one end of the metal member is bent on one side of the metal member, and the adhesive tape is attached to the remaining portion of the one surface of the metal member where the one end does not overlap, and the adhesive tape is attached. An electronic device in which one surface of the metal member is brought into contact with one of the conductive members by the adhesive force of the adhesive tape and the other surface of the metal member is brought into contact with the other of the conductive members. . 3. An electronic device in which a conductive sheet having a structure in which a metal member and an adhesive tape are superposed between the two conductive members which need to be electrically conductive, is electrically connected.
Both ends of the metal member are bent on one side of the metal member, and the adhesive tape is attached to the remaining portion of the one surface of the metal member where the folded both ends do not overlap each other, and the adhesive tape is attached. The one surface of the metal member is brought into contact with one of the conductive members by the adhesive force of the adhesive tape, and the other surface of the metal member is brought into contact with the other of the conductive members. machine. 4. The electronic device according to claim 1, wherein one of the conductive members is a housing forming a main body of the electronic device. 5. The one of the conductive members according to claim 1, wherein one of the conductive members is a casing that constitutes a main body of the electronic device, and the other is a shield member of a printed circuit board provided in the casing. Electronic device described in.